59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
/****************************************************************************
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* Copyright (C) 2016-2021 Maschell
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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#include "DefaultNUSDataProcessor.h"
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bool DefaultNUSDataProcessor::readPlainDecryptedContent(const std::shared_ptr<Content> &pContent, std::vector<uint8_t> &out_data) {
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if ((pContent->type & 0x0002) == 0x0002) {
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DEBUG_FUNCTION_LINE("Hashed content not supported yet");
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return false;
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}
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auto contentSize = ROUNDUP(pContent->encryptedFileSize, 16);
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out_data.resize(contentSize);
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auto *inData = (uint8_t *) malloc(contentSize);
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if (inData == nullptr) {
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DEBUG_FUNCTION_LINE("Failed to alloc");
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return false;
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}
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if (!dataProvider->readRawContent(pContent, inData, 0, contentSize)) {
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DEBUG_FUNCTION_LINE("Failed tor read content");
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free(inData);
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return false;
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}
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std::array<uint8_t, 16> IV{};
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memset(IV.data(), 0, 16);
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uint16_t content_index = pContent->index;
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memcpy(IV.data(), &content_index, 2);
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nusDecryption->decryptData(IV, inData, out_data.data(), contentSize);
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free(inData);
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return true;
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}
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std::shared_ptr<NUSDataProvider> DefaultNUSDataProcessor::getDataProvider() {
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return dataProvider;
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}
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DefaultNUSDataProcessor::DefaultNUSDataProcessor(
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std::shared_ptr<NUSDataProvider> pDataProvider,
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std::shared_ptr<NUSDecryption> pNUSDecryption) : dataProvider(std::move(pDataProvider)),
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nusDecryption(std::move(pNUSDecryption)) {
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}
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